S-90357A114 2-56 x 1/2" Alloy Steel Ultra-Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating for extended service life in harsh industrial environments
• Exceptional mechanical strength with 140,000 psi tensile strength and Rockwell C32 hardness for high-stress applications
• Precision thread engagement with Class 3A fit ensuring reliable, vibration-resistant fastening performance
• Space-saving ultra-low profile design allowing installation in confined spaces where standard heads won't fit
• Optimized drive efficiency with 0.050" hex drive providing maximum torque transfer and reduced stripping risk
• Industry-standard compatibility with UNC coarse threads for quick assembly and disassembly operations
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global manufacturing applications

Professional Applications & Engineering Value

These black-oxide alloy steel socket head cap screws deliver critical performance advantages in precision engineering applications where space constraints and reliability are paramount. The ultra-low profile socket head design enables installation in compact assemblies typically found in electronics enclosures, aerospace components, and precision machinery. The Class 3A thread fit with 2-56 UNC coarse threads provides superior vibration resistance while facilitating rapid assembly in production environments. The combination of 140,000 psi tensile strength and controlled Rockwell C32 hardness ensures these fasteners maintain clamp load under dynamic loading conditions, preventing joint failure in critical applications. The black-oxide surface treatment offers enhanced corrosion protection without significant dimensional changes, making these screws ideal for applications requiring both precision fit and environmental durability.

Specification Summary & Compliance

Manufactured to precise dimensional standards with length tolerance of -0.005" to 0.005" and Class 3A thread fit for superior engagement. Features UNC coarse threads with 2-56 thread size and right-hand thread direction. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications. The inch system measurement and standardized thread profile guarantee interchangeability with existing industrial equipment and tooling.